sulfuric acid; water in sulfuric acid Kinetics; byproducts: (CN)2, HCN; decomposition Mn(CN)6(2-) in aq. H2SO4 in range 20-50°C; react. mechanism proposed;; not isolated; detn. by UV spectroscopy;;

hydrogenchloride; KIO3; water in water Kinetics; byproducts: HCN; Reduction of Mn(IV) cpd. by As(III) in acidic media at various concns., mechanism discussed.; No isolation of products, reaction was observed by UV spectroscopy and titration with MnO4(1-) soln.;

hydrogenchloride; KIO3; water in water Kinetics; byproducts: HCN; Reduction of Mn(IV) cpd. by As(III) in acidic media at various concns., mechanism discussed.; No isolation of products, reaction was observed by UV spectroscopy and titration with MnO4(1-) soln.;